package cn.element.netty.loop;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import lombok.extern.slf4j.Slf4j;

import java.nio.charset.Charset;

@Slf4j
public class EventLoopServer {

    public static void main(String[] args) {
        EventLoopGroup group = new DefaultEventLoopGroup();
        new ServerBootstrap()
                .group(new NioEventLoopGroup(), new NioEventLoopGroup(2))
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<NioSocketChannel>() {
                    @Override
                    protected void initChannel(NioSocketChannel ch) throws Exception {
                        ch.pipeline()
                          .addLast("handler1", new ChannelInboundHandlerAdapter() {
                              @Override  // ByteBuf
                              public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                  ByteBuf buffer = (ByteBuf) msg;
                                  log.debug(buffer.toString(Charset.defaultCharset()));
                                  ctx.fireChannelRead(msg);  // 将消息传递给下一个handler
                              }
                          })
                          .addLast(group, "handler2", new ChannelInboundHandlerAdapter() {
                              @Override
                              public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                  ByteBuf buffer = (ByteBuf) msg;
                                  log.debug(buffer.toString(Charset.defaultCharset()));
                              }
                          });
                    }
                })
                .bind(8080);
    }

}
